cliot (version 1.0.0)

ie_mortality_risk_score: Infective Endocarditis (IE) Mortality Risk Score

Description

Calculates the 6-month mortality risk score for patients with active Infective Endocarditis (IE). Derived from the International Collaboration on Endocarditis (ICE) database, this tool stratifies patients into risk categories based on host factors, disease characteristics, and complications.

Usage

ie_mortality_risk_score(age, severe_heart_failure, microorganism,
                        paravalvular_complication, dialysis, prosthetic_valve)

Value

A list containing:

IE_Mortality_Score

The calculated risk score (Range 0-31+).

Risk_Category

Classification (Low <=6, Intermediate 7-14, High >=15).

Est_6_Month_Mortality

Estimated percentage probability of mortality within 6 months.

Arguments

age

Numeric. Patient age in years. <45: 0 pts. 45-54: 3 pts. 55-64: 5 pts. 65-74: 7 pts. >=75: 9 pts.

severe_heart_failure

Numeric (0 or 1). Presence of severe heart failure (NYHA Class III or IV). (1 = Yes, +5 pts).

microorganism

String. Causative organism. "viridans_streptococci": 0 pts. "staphylococcus_aureus": +5 pts. "other": +2 pts.

paravalvular_complication

Numeric (0 or 1). Presence of paravalvular complications (e.g., abscess, fistula). (1 = Yes, +4 pts).

dialysis

Numeric (0 or 1). Patient is on dialysis. (1 = Yes, +4 pts).

prosthetic_valve

Numeric (0 or 1). Presence of a prosthetic valve. (1 = Yes, +4 pts).

References

Park LP, Chu VH, Peterson G, et al. A validated model for predicting 6-month mortality in infective endocarditis. Eur Heart J. 2016;37(30):2394-2404. doi:10.1093/eurheartj/ehv593

Examples

# Example 1: High Risk
# 70yo (+7), S. aureus (+5), Dialysis (+4)
# Score = 16
ie_mortality_risk_score(70, 0, "staphylococcus_aureus", 0, 1, 0)

# Example 2: Low Risk
# 40yo (0), Viridans Strep (0), No complications
# Score = 0
ie_mortality_risk_score(40, 0, "viridans_streptococci", 0, 0, 0)